Teccor
®
brand Thyristors
Standard Bidirectional SIDACs
Kxxxzy SIDAC
Description
The SIDAC is a silicon bilateral voltage triggered switch.
Upon application of a voltage exceeding the SIDAC breakover
voltage point, the SIDAC switches on through a negative
resistance region to a low on-state voltage. Conduction
continues until the current is interrupted or drops below the
minimum holding current of the device.
SIDACs feature glass-passivated junctions to ensure a
rugged and dependable device capable of withstanding
harsh environments.
Features
Schematic Symbol
to 330V
Applications
Suitable for high voltage power supplies, natural gas
igniters, high-pressure Sodium lamps, and Xenon flash
ignition.
Electrical Specifications
(T
J
= 25°C, unless otherwise specified)
Symbol
Parameters
Test Conditions
K0900y
K1050y
K1100y
K1200y
K1300y
V
BO
Breakover/Trigger Voltage
K1400y
K1500y
K200zy
K220zy
K240zy
K250zy
K300zy
K0900y
K1050y
K1100y
K1200y
K1300y
V
DRM
Repetitive Peak Off-state Voltage
K1400y
K1500y
K200zy
K220zy
K240zy
K250zy
K300zy
Note: xxx = voltage, z = circuit function, y = package
©2008 Littelfuse, Inc.
Specifications are subject to change without notice.
Please refer to http://www.littelfuse.com for current information.
309
Revised: July 9, 2008
Kxxxzy Series
Min
79
95
104
110
120
130
140
190
205
220
240
270
70
90
90
90
90
90
90
180
180
190
200
200
Max
97
113
118
125
138
146
170
215
230
250
280
330
Unit
V
V
Standard SIDACs
Teccor
®
brand Thyristors
Standard Bidirectional SIDACs
Electrical Specifications
(T
J
= 25°C, unless otherwise specified)
Symbol
I
T(RMS)
I
DRM
V
TM
I
H
Parameters
On-state RMS Current
Repetitive Peak Off-state Current
Peak On-state Voltage
Dynamic Holding Current
(V
BO
– V
S
)
Switching Resistance, R
S
= ________
(I
S
– I
BO
)
Breakover Current
Peak Repetitive Pulse Current (refer to figure 4)
Peak Non-repetitive Surge Current
(refer to figure 5)
Critical Rate of Rise of On-state Current
Critical Rate of Rise of Off-state Voltage
Storage Temperature Range
Junction Temperature Range
JL
Test Conditions
50/60Hz, T
J
< 125°C
V = V
DRM
50/60Hz Sine Wave
I
T
= 1A
Kxxx0y
Kxxx2y
Min
Max
1
5
1.5
3.0
150
Unit
A
μA
V
mA
R
L
= 100Ω
50/60Hz Sine Wave
50/60Hz Sine Wave
50/60Hz Sine Wave
t
p
= 10μs
Single Cycle
60Hz
5Hz
60Hz
50Hz
1500
-40
-40
DO-15
DO-214 (1)
TO-92
DO-15
TO-92
R
S
I
BO
I
TRM
I
TSM
di/dt
dv/dt
T
S
T
J
R
R
R
100
10
80
160
20
16.7
150
150
125
18
30
35
75
95
μA
A
A
A/μs
V/μs
°C
°C
°C/W
°C/W
°C/W
Thermal Resistance, Junction to Lead
Thermal Resistance, Junction to Case
Thermal Resistance, Junction to Ambient
JC
JA
Notes: xxx = voltage, z = circuit function, y = package
(1) Mounted on 1 cm
2
copper foil surface; two-ounce copper foil
Figure 1: V-I Characteristics
+I
I
T
I
H
I
S
I
DRM
I
BO
+V
V
T
V
BO
R
S
Figure 2: On-state Current vs. On-state
Voltage (Typical)
9
nstantaneous On-state Current (i
T
) – Amps
T
J
= 25°C
8
7
6
5
4
3
2
1
0
Kxxx0G
Kxxx0E
Kxxx0S
Kxxx2G
-V
R
S =
(V
BO
- V
S
)
(I
S
- I
BO
)
V
S
V
DRM
0.6
1.0
1.4
1.8
2.2
2.6
3.0
3.4
3.8
Instantaneous On-state Voltage (v
T
) – Volts
-I
Kxxxzy Series
310
Revised: July 9, 2008
©2008 Littelfuse, Inc.
Specifications are subject to change without notice.
Please refer to http://www.littelfuse.com for current information.
Teccor
®
brand Thyristors
Standard Bidirectional SIDACs
Figure 3: Power Dissipation vs. On-state Current
(Typical)
2.4
Figure 4: Repetitive Peak On-state Current (I
TRM
)
vs. Pulse Width at Various Frequencies
Repetitive Peak On-State Current (I
TRM
) - Amps
1000
Average On-State Power Dissipation
[P
D(AV)
] - Watts
2.2
2.0
1.8
1.6
1.4
1.2
1.0
0.8
0.6
0.4
0.2
0.0
0.0
CURRENT WAVEFORM: Sinusoidal
LOAD: Resistive or Inductive
CONDUCTION ANGLE:
See Basic SIDAC Circuit in Figure 12
di/dt Limit Line
I
TM
t
O
1/f
100
120 Hz
1 kHz
5
kHz
60 Hz
5
Hz
Kxxx2G
Kxxx0G
Kxxx0E
Kxxx0S
10
0.1
0.2
0.3
0.4
0.5
0.6
0.7
0.8
0.9
1.0
1
1.0
10.0
100.0
1000.0
RMS On-State Current [I
T(RMS)
] - Amps
Pulse Base Width (t
O
) - us
Figure 5: Peak Non-repetitive Surge Current (I
TSM
)
vs. Number of Cycles
100
SUPPLY FREQUENCY: 60 Hz Sinusoidal
LOAD: Resistive
RMS ON-STATE CURRENT: I
T
RMS Maximum Rated
Value at Specified Junction Temperature
Figure 6: Normalized V
BO
Change vs. Junction
Temperature
4%
2%
0%
Peak Surge (Non-repetitive)
On-state Current (I
TSM
) – Amps
V
BO
Change -- %
Kxxx2G
K1xx0E
K1xx0G
K1xx0S
K2xx0E
K2xx0G
K2xx0S
-2%
-4%
-6%
-8%
10
1
Notes:
1) Blocking capability may be lost during
and immediately following surge
current interval.
2) Overload may not be repeated until
junction temperature has returned
to steady-state rated value.
1
10
100
1000
-10%
-12%
-40
-20
0
20
40
60
80
100
120
140
Surge Current Duration -- Full Cycles
Junction Temperature (T
J
) -- °C
Maximum Allowable Lead/Case Temperature
(T
C
) - °C
2.0
130
Ratio of I
H
/ I
H
(T
J
= 25°C)
120
Kxxx0G
1.5
110
1.0
100
Kxxx0S
Kxxx0E
Kxxx2G
0.5
90
CURRENT WAVEFORM: Sinusoidal - 60Hz
LOAD: Resistive or Inductive
80
0.0
0.2
0.4
0.6
0.8
1.0
1.2
0.0
-40
-15
10
35
60
85
110
125
Junction Temperature (T
J
) -- °C
RMS On-State Current [I
T(RMS)
] - Amps
©2008 Littelfuse, Inc.
Specifications are subject to change without notice.
Please refer to http://www.littelfuse.com for current information.
311
Revised: July 9, 2008
Kxxxzy Series
Standard SIDACs
Figure 7: Normalized DC Holding Current
vs. Junction Temperature
Figure 8: Maximum Allowable Case Temperature
vs. RMS On-State Current
Teccor
®
brand Thyristors
Standard Bidirectional SIDACs
Figure 9: Maximum Allowable Ambient Temperature vs.
RMS On-State Current
140
Figure 10: Normalized Repetitive Peak Breakover
Current (I
BO
) vs. Junction Temperature
10
Maximum Allowable Ambient Temperature
(T
A
) - °C
120
100
80
Kxxx0G
60
Kxxx0S
Kxxx0E
Kxxx2G
40
25
20
0.0
0.2
Repetitive Peak Breakover
Current (I
BO
) Multiplier
1
20
30
40
50
60
70
80
90
100
110
120
130
CURRENT WAVEFORM: Sinusoidal - 60Hz
LOAD: Resistive or Inductive
FREE AIR RATING
0.4
0.6
0.8
1.0
RMS On-State Current [I
T(RMS)
] - Amps
Junction Temperature (T
J
) -- °C
Figure 11: Dynamic Holding Current Test Circuit for
SIDACs
Push to test
Switch to test
in each direction
Figure 12: Basic SIDAC Circuit
S1
100-250 V ac
60 Hz
100
1%
Device
Under
Test
100-250 V ac
60 Hz
V
BO
V
BO
V
BO
S1
Scope
I
H
Load
I
H
120-145
Conduction
Angle
I
PK
Trace Stops
˚
I
H
Load Current
I
H
Scope Indication
Figure 13: Relaxation Oscillator Using a SIDAC
Figure 14: Low-voltage Input Circuit for Gas Ignition
4.7
μF
(a) Circuit
10
μF
VBO
R
SIDAC
VDC(IN)
≥
VB0
VC
t
RL
IL
VC
(b) Waveforms
- +
100 V
+
-
4.7 k
-
50 V
+
½W
4.7
μF
100 V
1.2
μF
K1200E
Sidac
200 V
C
IL
24 V ac
60 Hz
R
max
≤
VIN - VBO
IBO
VIN - VTM
IH (MIN)
t
Rmin
≥
H.V.
Ignitor
Kxxxzy Series
312
Revised: July 9, 2008
©2008 Littelfuse, Inc.
Specifications are subject to change without notice.
Please refer to http://www.littelfuse.com for current information.
Teccor
®
brand Thyristors
Standard Bidirectional SIDACs
Figure 15: Comparison of SIDAC versus SCR for Gas
Ignitor Circuit
Figure 16: Xenon Lamp Flashing Circuit
100
SCR
Sidac
2W
-
10
μF
+
Xenon Lamp
250 V
K2200G
20 M
100-250 V ac
60 Hz
100-250 V ac
60 Hz
+
10
μF
-
450 V
120 V ac
60 Hz
4 kV
Sidac
200-
400 V
Trigger
Transformer
20:1
0.01
μF
400 V
Figure 17: Typical High-pressure Sodium Lamp Firing Circuit
Ballast
Ballast
Sidac
3.3 k
0.47
μF
400 V
Lamp
Sidac
7.5 k
0.22
μF
Lamp
120 V ac
60 Hz
16 mH
220 V ac
60 Hz
120 V ac
220 V ac
Soldering Parameters
Reflow Condition
- Temperature Min (T
s(min)
)
Pre Heat
- Temperature Max (T
s(max)
)
- Time (min to max) (t
s
)
Average ramp up rate (Liquidus Temp)
(T
L
) to peak
T
S(max)
to T
L
- Ramp-up Rate
Reflow
- Temperature (T
L
) (Liquidus)
- Temperature (t
L
)
Pb – Free assembly
T
P
Temperature
Ramp-up
t
P
150°C
200°C
60 – 190 secs
5°C/second max
5°C/second max
217°C
60 – 150 seconds
260
+0/-5
T
L
T
S(max)
Preheat
t
L
Ramp-do
Ramp-down
T
S(min)
t
S
25
time to peak temperature
Time
Peak Temperature (T
P
)
Time within 5°C of actual peak
Temperature (t
p
)
Ramp-down Rate
Time 25°C to peak Temperature (T
P
)
Do not exceed
©2008 Littelfuse, Inc.
Specifications are subject to change without notice.
Please refer to http://www.littelfuse.com for current information.
°C
20 – 40 seconds
5°C/second max
8 minutes Max.
280°C
313
Revised: July 9, 2008
Kxxxzy Series
Standard SIDACs
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